1551216505112 has 8 divisors (see below), whose sum is σ = 2908530947100. Its totient is φ = 775608252552.

The previous prime is 1551216505103. The next prime is 1551216505141. The reversal of 1551216505112 is 2115056121551.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96951031562 + ... + 96951031577.

Almost surely, 2^{1551216505112} is an apocalyptic number.

It is an amenable number.

1551216505112 is a deficient number, since it is larger than the sum of its proper divisors (1357314441988).

1551216505112 is a wasteful number, since it uses less digits than its factorization.

1551216505112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193902063145 (or 193902063141 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 35.

The spelling of 1551216505112 in words is "one trillion, five hundred fifty-one billion, two hundred sixteen million, five hundred five thousand, one hundred twelve".